3O4J:
reference: Structure and catalysis of acylaminoacyl peptidase: closed and open subunits of a dimer oligopeptidase., Harmat V, Domokos K, Menyhard DK, Pallo A, Szeltner Z, Szamosi I, Beke-Somfai T, Naray-Szabo G, Polgar L, J Biol Chem. 2010 Nov 16. PMID: 21084296

This OCA Structure page
uses Jmol, developed by the Jmol Development Team (documentation).